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    Also know as Synthetic Sapphire

    Functions:High surface hardness, high temperature resistance


    Application: Various instrument windows, watch surface, Cover glass



    Spectral Characteristics

    Tave>85% @ 400-700nm

    Physical Characteristics

    0.6, 1.0, 2.0, 3.0mm (Customizable thickness)

    Square: 8x8 - 100x100mm

    Round: Dia8 - 100mm

    Resistant Temperature


    Sapphire material properties
    Physical propertiesCrystal Structuresingle crystal
    Main ImpuritiesNa, Si, Ca, Fe, Ga, Mg, Ti, Mn, Pb, Cu, Zn, Ni, Cr.
    Thermal propertiesmelting point2320K3
    Softening point2070K3
    thermal expansion6.2*10-6/K @300K3
    Mechanical propertieshardness
    9 (Mohs Scale of hardness)
    Electrical propertiesRefractive index (@589.3nm)1.760 parallel C-axis faces
    1.769 Vertical C-axis faces
    Resistance value770K: 1011Ω.cm
    1270K: 106Ω.cm
    2270K: 103Ω.cm
    ROCOES strives to keep the website information up to date.
    If there are changes, the actual products will be the main ones.
    Information and Notes

    1. Mohs hardness: Mohs' scale of hardness; Mohs hardness scale. Also known as Moss hardness, a standard for mineral hardness. First proposed by the German mineralogist Frederich Mohs in 1812.

    The scratch method is used to scratch the surface of the tested mineral by the pyramidal diamond needle, and it is customary to use Mohs hardness in mineralogy or gemology.      Use the measured depth of the scratches to represent the hardness in ten steps:

    1 talc (hardness), 2 gypsum, 3 calcite,

    4 fluorite, 5 apatite, 6 feldspar (orthoclase; periclase)

    7 quartz (quartz), 8 topaz, 9 corundum, 10 diamond.

    2. Special shapes or thicknesses can be cut or machined according to customer requirements. Please refer to Glass process for processing.

    3. The transmittance curves are measurements at 0°of incidence angle.

    4. Need higher penetration? Please refer to anti-reflection processing.

    5. The website specifications are for reference only, and shipments are subjected to the specifications confirmed by both parties.

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